Re: [PATCH v2] Add bit operations util header

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От Tom Lane
Тема Re: [PATCH v2] Add bit operations util header
Дата
Msg-id 5714.1244044369@sss.pgh.pa.us
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Ответ на Re: [PATCH v2] Add bit operations util header  (Florian Weimer <fweimer@bfk.de>)
Ответы Re: [PATCH v2] Add bit operations util header  (Jeremy Kerr <jk@ozlabs.org>)
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Florian Weimer <fweimer@bfk.de> writes:
> * Jeremy Kerr:
>> Because now we have to test the compiler *and* the version as well?

> This builtin is not architecture-specific, so you'd save the
> architecture check.

The appropriate way to handle it would be a configure probe to see if
the function is available, thus avoiding any wired-in knowledge about
compiler or compiler version *or* architecture.

The other thing I didn't like about the patch was the assumption that
it's okay to have a "static inline" function in a header.  You can
get away with that in gcc but *not* in other compilers.  Look at the
existing coding patterns for, eg, list_head; then go thou and do
likewise.  Or, since there's currently no need for the code outside
aset.c, forget about putting it in a header and just plop it into
aset.c.
        regards, tom lane


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